[[Image:ChurchDemetriosThess.JPG|right|thumbnail|Church of St. Demetrios exterior (Thessaloniki, Greece)]]The '''Church of Saint Demetrios''' in Thessalonica, Greece is situated on the site of previous churches built over the ruins of the Roman bath where St. [[Demetrios of Thessaloniki|Demetrios the Myrrhgusher]] was imprisoned and [[martyr]]ed. The present structure is a reconstruction of the seventh century church that was destroyed by fire in 1917. The [[church]] is a [[basilica]] with five [[apse]]s, a [[narthex]], and transept.